Arrange half of potatoes in an 11 x 7-inch baking dish coated with cooking spray. Pour half of sauce over potatoes; top evenly with ham. Top with remaining potatoes and remaining sauce; sprinkle evenly with remaining 1/2 cup cheese.

Cover with foil coated with cooking spray. Bake at 350° for 40 minutes. Uncover and bake an additional 45 minutes or until potatoes are tender and the cheese is golden brown. Remove from oven; let stand 5 minutes before serving.

*** To make homemade buttermilk, place 1 tablespoon of vinegar or lemon
juice in a liquid measuring cup. Fill cup with milk until it reaches the
1-cup line. Let stand for five minutes. Use only 1/2 cup of the prepared
mixture for the recipe.See full instructions on: www.alexandracooks.com